Machine for forming heels for shoes



C. l. POLLARD MACHINE FOR FORMING HEELS FOR SHOES March 1 1927. 1,619,154

Filed July 10, 1925 e Sheets-Sheet 1 March 1 1927.

C. l. POLLARD MACHINE FOR FORMING HEELS FOR snoss Filed July 10, 1925 6 Sheets-Sheet 2 March 1, 1927. 1,619,154

C. I. POLLARD MACHINE FOR FORMING HEELS FOR SHOES Filed July 10, 1925 s Sheets-Sheet 5 v MUM 5 JWMW,

worm

March 1 ,1927; 1,619,154

. c. l. PQLLARD MACHINE FOR FORMING HEELS FOR SHOES Filed July 10, 1925 6 Sheets-Sheet 4 M r h 1 1927.

a c v c. l. POLLARD MACHINE FOR FORMING HEELS, FOR SHOES Filed July 10, 1925 6 Sheets-Sheet M MW, m 6) QM,

March 1 1927. 1,619,154

C.LPOLLARD MACHINE FOR FORMING HEELS FOR SHOES Patented Mar. 1, 1927.

UNITED STATES PATENT OFFICE.

CARL INGALLS POLLARD, OF PORTSMOUTH, OHIO, ASSIGNOR OF ONE-HALF TO THE VULCAN LAST COMPANY, OF PORTSMOUTH, OHIO, A CORPORATION OF OHIO.

MACHINE FOR FORMING HEELS FOR SHOES.

My invention relates to a machine for forming heels for shoes.

It is the object of my invention to provide a machine which will form the compound curves on the heel of a shoe.

It is a further object of my invention to provide a machine which will embrace varying types of heels of varying sizes and dimensions, and will be adjustable for that purpose without a modification of the machine.

It is an. additional object of my invention to rovide a machine in which any number of lieels may be made in duplicate.

It is an additional object to provide a machine which will be adjustable so that the curvature of the heel on the sides and the back may be varied to suit the individual type of heel desired.

It is an additional object to provide a cutting means for forming the heel which will give a similar cut to the heel. on both sides and on the rear thereof, so that dual cutting means may be provided which will treat both sides of the heel alike.

It is an additional object of my invention to provide means of guiding inwardly and outwardly the heel into engagement with the cutting means at predetermined elevations and angles, and to provide means of adjusting such positions and angles to suit the character of heel it is desired to manufacture. 1 I

It is a further object of my invention to provide a machine which will be safe to operate, and in which thecutting means can not easily engage or come in contact with the operator.

It is a further object to provide a mecha nism of such a character that the formation of the curves of the heel may be largely automatic, so that different operators on different machines having similar adjustment,

or different operators on the same machine,-

. will secure a uniform product.

Referring to the drawings: Figure 1 is a side elevation of the machine. v

. Figure 2 is a front elevation of the machine. I

Figure 3 is a plan view of the machine. Figure 4 is a section on theline 4-4 of Figure 3, with the heel holder in full line.

Figure 5 is a diagrammatic plan view of the machine, indicating the various positions of the blank for being worked upon by the cutting means.

Figure 6 is a blank.

Figure -7 is a view showing a plan view of the blank.

Figure 8 is a View showing the result of the first operation on the blank. I

Figure 9 is a view showing the result of the second operation on the blank.

Figure 10 is a erspective of the blank after being finished on the machine.

Figure 11 is a plan View of the machine and its drives.

Figure 12 is a side elevation partially in section, showing a safety driving clutch.

1 In general this machine is operated as folows:

A heel blank is clamped in the clamping jaws, after having been adjusted for the particular size of heel blank to be used. This heel clamp is moved about a central pivot between the cutting knives. The angle at which this blank is held in the holder is determined by the upper track.

The elevation of this holder is determined by the lower track. The angle of the tracks themselves to the vertical, is determined by another adjustment. Cutting knives are provided for workingon either side of the heel to a point midway of the rear thereof. The holder itself is so arranged that it may be rotated while resting on its tracks, soas to bring the handle of the holder parallel to the face of the machine, thus securing a semi-circular sweep of the blank on the knives. i

With this general description of the ma chine, the following is a detailed description:

A frame 1 is bolted by the bolts 2 to the floor. The frame consists of a series of vertical and transverse members such as 3'; Upon this frameismounted a table 4 upon The holder consists of a base-block 5, which is pivoted at 6, upon a block 7, which is (inounted on the top of a vertical standar 8.

This standard is guided in the eyes 9 and 10 of a link or yoke 11. The lower end of this vertical member 8 has a hardened steel plate 12, which rests upon the lower track 13. This track in turn is pivoted upon the frame 68 of the machine at 14. The elevation of the track 13 is determined by the setscrew 15, which is adapted to turn in the arm 16 mounted on the frame 68. The setscrew is positioned in the arm 16 by the lock-nut 17.

Returning to the holder and the pivotal mounting of the baseblock upon the vertical standard, it will be observed that this block carries a plate 18 having corrugations 19 on the face thereof for engaging with the base of the blank 20. The blank 20 rests upon this block upon these corrugations. An adjustable finger 21 is mounted upon. the block adjacent this corrugated plate and held in posltion by a bolt 22, which works in a slot 23 in the blank-retaining finger 21. This blank-retaining finger is adjusted by the setscrew24, which works in an eye 25 carried on the upper surface of the base-block. The upwardly and inwardly extending free end 0 the blank-retaining finger overlaps the forward upper edge of the heel blank 20, and not only serves to position it, but also serves to hold it upon the corrugated plate 18. The

- upper end of this blank is engaged by the corrugated face 26 of the locking finger 27. Thus the blank is engaged between the two corrugated surfaces and between the plate and the locking finger, while it is ositione'cl by the blank-retainingfinger. T is blanklocklng finger is pivotally mounted upon a diagonally disposed adjustable frame 28 at 29. The'pivot 29 is adjustable in the frame 28 because it is so mounted that it may move n the slot 30 in this frame 28. The frame itself is adjustably mounted on the baseblock through the bolts 31 and the slot'32 in the frame 28. The upper end of this frame 28 is formed into a head 33 in which there is vertically disposed a slot 34. In this slot there travels a block 35. This block is adjusted and held in position by a screw 36 actuated by a handle 37. The screw turns in a block 38 (see Fig. 1). The block has a transversemember 39 which serves as a shaft upon which is pivoted a cam head 40, carried on the end of the handle 41. This cam engages with the upper surface of the locking finger 27, serving to force it downwardly against the resistance of a helical spring 42, which is connected at one end 43 to the finger 27, andat the other end to the head 33, as at 44.

In operation the position of the pivot 39 is ad usted by the screw 36.

The handle is lifted so that the sprin 42 may lift the locking finger 27. A blan is placed in position beneath the finger 21, and the handle is lowered so that the cam 40, en gaging with 27, will lock the several parts to one another. The adjustment of the handle 37 will determine the degree and nature of the locking engagement.

The whole structure pivots about the pivot 6. The base-block carries a track-engaging plate 45, which rides upon the track 46. This track determines the angle which the entire holder of the blank assumes relatively to the cutting knives. The track itself is pivoted on the frame at 47, and is adjusted by the set-screw 48 working in the arm 49 mounted on the frame 57, in a manner to be hereinafter described. This set-screw 48 is locked in position by the lock-nut 50. The frames upon which the tracks 13 and 46 are mounted at 14 and 47 are designated 68 and 57. and are adapted to move vertically on the face of the main frame 1. This adjustment will be hereinafter described. A pair of horizontally disposed supports are slidably mounted in the frame 1. Thesesupports are designated respectively 51 and 52, and are carried in the extended collars 53 and 54 in the frame 1. They are positioned therein by the set-screws 55 and 56. These slidable members 51 and 52 have pivoted thereon the arms 58 and 59 on the pivots 60 and 61. The arms 58 and 59 carry on their outer ends a vertical member 62, which is positioned vertically by the collars 63 and 64 afiixed thereto by set-screws 65 and 66. This vertical member carries the link or yoke 11, which in turn supports the vertical standard 8, which determines the elevation in its turn of the block 7, upon which is pivoted the holding mechanism for the blanks. At 67 is designated the arms of the link 11 which engage with the vertical member 62. By varying the ad'ustment of the supporting members 51 an 52, the lateral position of 62 may be controlled, and also its position with respect to the vertical.

The frame 57 consists of a half on each side of the machine, as will be more clearly seen in Figure 2; The frame is vertically adjustable on the bolts 69 which are located in the slots 70 in each half of the frame 57 on each side of the machine. It will be seen that this frame 57 carries the upper track 46 pivotally at 47, and carries the frame 49 upon which is mounted the screw 48.

A similar arrangement is found in the eyes 74.- of the frame 1. Similar set-screws and eyes are on each side of the face of the frame of the machine.

A corresponding pair of set-screws designated 75, working in eyes 76 of the frame are provided for actuating the vertical adjustment of the frame 68.

Mounted on the vertical standard 8, beneath the block 7, is a collar or plate 77, which is adapted to engage with a horn or stop 78, carried on an arm 79 on top of the machine adjacent the cutting knives in front of the knives.

As will be seen not only in Figure 4, but

more particularly in Figure 3, this horn or' guide is semi-circular and is adapted to engage with the buffer plate 77. The arm 79 is connected to a block at 80, having a slot 81, in which there is located a guiding bolt 82 mounted on the top of the table 1. This block is actuated by a screw 83,- carried by the table top, or an eye mounted thereon:

The screw is actuated by a knurled handwheel 84, so that the depth of cut may be determined by this adjusting horn engaging with the buffer plate.

" As will be seen in Figure 3, the track 13 has a V-shaped vertical depression 85 at the central or neutral position of the holder for the blank. This serves to maintain the holder in its neutral position, away from the knives,

and also serves to maintain it in position when the blanks are being changed. As an additional aid for this same pur ose, arigid arm 86 is provided, located" etween the knives and supported on the table 1 by the bolts 87. Slots 88 are provided in this arm for adjustment on the bolts 87 The free end 89 of this arm 86 engages frictionally with the holder for this purpose.

. Within the tracks and the supports, there are mounted two similar cutting mechanisms for respectively cutting the respective halves of the heel. These cutters consist of an operating shaft 90 with a lower knife-holding plate 91 and an upper knife-holding plate 92, suitably grooved for engaging the sides' of the cutters or knives 93. A lock-nut 94 serves to co-operate with the shoulder95 for locking the plates and knives to one another on the shaft.

The shafts are mounted in suitable bearings carried on the front of the frame, such .as those designated 96 and 97, each shaft being downwardly and inwardly tapered as indicated in the .dotted lines 98. Upwardl and inwardly ta ered pulleys 99 are provi' ed to support be ts 100. The belts mounted, on the respective pulleys engage with pulley wheels 101 mounted on a com- I mon shaft 102 driven by a common motor 103. There is an overload brake pulley or safety in Figure 12, of the shaft 102 ,working inside of the sleeve 104, whioh is mounted on-v clutch which consists, as will be seen.

On the'track 46. The

the armature shaft of the'motor 103. On

of laterally projecting pins 108. A short \I belt 109 passes around the pins 108, so that the pins 106 on the spider engage the portions of the belt between the pins 108. The belt is split at 110, and held together by a lacing 111. If there is any jam in the mator and the shafting can operate independently, so that only the lacing breaks,'and the machinery itself will not be torn to pieces due to the jamtherein.

The blank placed in the machine, generally designated 20,,is of the form shown in Figure 6. It is provided with a roove 112, an upper surface 113, which is t e top of the ,heel, and a surface 114, which is the bottom of the heel, but when placedin the machine, the heel is placed in it upside down. A sloping surface 115 is toward the rear of the heel.

After fixingthe blank in the holder, the holder is moved to the position shown in Figure 5 at the right hand side or the left, as may be preferred.

v The handle swings about the vertical shaft- 62, which carries the swinging frame 11, and "which in turn supports the vertical standard 8.

The entire structure is moved to the position shown and marked'A, so that the knives begin to cut that portion of the blank marked 6, which is at the forward part of the heel, adjacent the groove 112. At this time, the buffer plate 77 is in engagement with the horn 78. As the handle is moved, the buffer plate 77 rolls on the horn 78 and the knives take a progressive cut from the front of the heel to the rear, to the position marked C, as will be seen in Figure 8.

The several adjustmentsof angularity and vertical position determine the precise curves secured. Upon the completion of the operchinery, the lacing gives away, and the moation at C, the handle is in the position heel is secured, as is seen in Figure 10, so

Upon

far as this machine is designed to work upon the .heel. The plate 45 and is provided with a shoulder 45?,so that as the blank-supporting means swings 1n various positions, the late will always be shoulder 45* will preis made sufficiently broad,

vent a disengagement of it from the track. The plate 12 on the vertical standard 8 is likewise formed into an arm of some length, so that the plate will always be on the track 13.

The head 28 is held in position by a knurled locking finger 116 engaging with the teeth 117. 116 is held in position by the pm 118 inserted in the block. The pin 119 on the other side of the head is mounted on the block and acts as a stop as well as a guide in the adjustment of the head.

It will be understood that I desire to comprehend Within my invention such modifications as may be fairly embraced within it, and as may be found necessary in adapting it to various conditions in the art in the zourse of the application of the invention.

Having thus fully described my inventwo, What I claim as new, and desire to secure by Letters Patent, is:

1. In a machine for manufacturingheels, a frame, means for holding a blank, means pivoted on the frame for supporting the holding means, said holding means being transversely pivoted thereon, a cutting means, means for vertically adjusting the position of the holding means about its transverse pivot and means for horizontally adjusting the position of said holding means.

2. In a machine for manufacturing heels, a frame, means for holding a blank, means pivoted on the frame for supporting the olding means, said holding means being transversely pivoted thereon, a cutting means, means for vertically adjusting the position of the holding means about its transverse-pivot, means to vertically pivot the holding means with respect to the means which pivotally connects it to the f rame, means for adjusting thevertical position of the vertical pivotal means of the holding means, and means permitting lateral adjustment of the vertical pivoting means last mentioned.

3. In a machine for manufacturing heels, a body frame, a work holder, a shaft having said holder horizontally pivoted thereto, a member in which said shaft is rotatably mounted, a vertically adjustable shaft upon which said member is slidably and pivot- .ably mounted, and means for laterally adjusting said adjustable shaft and its supported parts with respect to the frame, and

cutting means about which the holderis transversely swung.

4. In a machine for manufacturing heels, a frame, a cutting means mounted thereon, a holding means to hold a blank, a link having a horizontally disposed pivot connected to said holding means, said link being laterally adjustably pivoted on said frame for guiding said holding means and the blank adjacent the cutting means, a track for sup porting said holding means as it is moved havin a horizontally disposed pivot connecte to said holding means, said link being laterally adjustably pivoted on said frame for uiding said holding means and the blank :1 jacent the cutting means, a track for supporting said holding means as it is moved relatively to the frame on the link to determine the angularity of the holding means, means to pivot on a vertical axis the holding means on the outer end of the link, anda second track for adjusting the elevation of said vertical pivoting means and the holding means, said tracks normally being disposed at a slight angle to the horizontal.

6. In a machine for manufacturing heels, a frame, a cutting means mounted thereon, a holding means to hold a blank, a link having a horizontally disposed pivot connected to said holding means, said link being later-.

ally adjustably pivoted on said frame for gulding said holding means and the blank adjacent the cutting means, a track for supporting said holding means as it is moved relatively to the frame on the link, means to pivot on a vertical axis the holding means on the outer end of the link and a second track for adjusting the elevation of said vertical pivoting means and the holding means, said tracks normally being disposed at a slight angle to the horizontal, and means for adjusting the angularity of said tracks.

7. In a machine for manufacturing heels, a frame, a cutting means mounted thereon, a holding means to hold a blank, a link having a horizontally disposed pivot connected to said holding means, said link being laterally adjustably pivoted on said frame for guiding said holding means and the blank adjacent the cutting means, a track for supporting said holding means as it is moved relatively to the frame on the link, means to pivot on a vertical axis the holding means on the outer end of the link, a second track for adjusting the elevation of said vertical pivoting means and the holding means, said tracks normally being disposed at a slight angle to the horizontal. means for adjusting the angularity of said tracks, and means for bodilv adjusting either of said tracks.

8. In a machine for manufacturing heels, a frame, a cutting means mounted thereon, a holding means to hold a blank, a link connected With said holding means and laterally adjustably pivoted on-sai'd frame for guiding said holding means and its blank adjacent the cutting means, a track for suping means with porting said holding means as it is moved relatively to the frame on the link, means ing means to one another.

9. Ina machine for manufacturing heels, a supporting body frame, cutting means mounted on the frame, a work holder to hold the blank, a link pivotally connected with the holder and laterally adjustably pivoted to said body frame for guiding said holder and its blank adjacent the cutting means, a pair of vertically adjustable track frames on the body frame, a track pivoted on one of said track frames and supporting said holder as it is moved relatively to the body frame, a second track pivoted to the other frame for adjusting the elevation of the holder, means on the respective track frames for adjustin the angularity of said tracks, and means or moving said holder relative to the tracks into operative engagementwith the cuttin means. a

10. In a machine or manufacturing heels, a supporting body frame, cutting means mounted on the frame, a work holder to hold a heel blank, a link structure pivoted to the body thereto, said link also being adapted to lateral ad ustment relative to said frame, means connecting said link and holder for permitting horizontal and vertical pivotal movement of the holder relative to the cutting means, a pair of frame, a track vertically pivoted to one of said frames for supporting said holder as it is moved relative to the body frame and said cutting means, a second track vertically pivoted to the other t rack frame and upon which the holder connectifig means and link structure engage for determining the elevation of said ho der, ad'usting means on each of said track frames or varying the angularity ing either of said track frames, and means for moving the holder relative to the track into engagement with said cutting means.

11. In a machine for manufacturin heels, a frame, a cuttin means mounted thereon, a track, a blankolding means adapted to slide on said track, a link pivoted on said frame and vertically pivoted to said holding means, means to transversel pivot said'holdrespect to its vertical pivot a second track to determine the elevation of the vertically pivoting means,

the holdframe and vertically movable relativetrack frames on the body of the tracks, means for bodily adj ustbase-block to be the work-engaging said tracks bein semi-circular and said cutting means belng disposed on both sides of the frame adjacent the ends of said track, whereby the blank will be presented at a predetermined angle to the cutting means at a predetermined elevation, and may be rotated with respect thereto, and means on one of said tracks for locating said holding means in a neutral position.

12. In a machine for manufacturing heels, a frame, a cutting means mounted thereon, a track, a blank-holding means adapted to slide on said track, a link pivoted on said frame and vertically pivoted to said holding means, means to transversely pivot said holding means with respect to its vertical pivot, a second track-to determine the elevation of the vertically pivoting means, said tracks being semi-circular and said cutting means. beingdisposed on both sides of the frame adjacent the ends of said tracks, whereby t e mined angle to the cutting means at a pre determined elevation, and may be rotated with respect thereto, means on one of said tracks for locating said holding means in a neutral position, and means to prevent the holding means when in a neutral position from coming in engagement with the cutting port, a base-block horizontally pivoted to the support and provided with a work-engaging face, a member longitudinally movable on the base-block in a'direction normal to the Work-enga ing face, said member having an angularly isposed head projecting over said face, means for holding said member in adjusted relation to the base-block, a blankpositioning finger pivoted in said head and provided with a work-engaging face to cooperate with the work-engaging face of the base-block, an element adjustable in said head, and a lever pivoted to said element'andhaving a cam to engage the free end of the finger, said lever and cam being operative to move the finger to force together the workengaging-faces.

14. In a machine for manufacturing heels, a blank-holding means comprising a support, a base-block horizontally pivoted to the support and provided with a work-engaging face, a member adjustably mounted on sai longitudinally movable thereon in a direction approximately normal to the'work-engaging face of t e base-block, said member having an angularly. disposed head projecting over said face, means holding said member in its adjustments on fin er the base-block, a blank-positioning movably mounted in said head and provi ed with a-work engagin face tocoo erate with ice of the ase-block, said finger being pivoted in transverseslots for V I in said member to permit movement of its work-engaging face across the Work-engaging face of the base-block, an element adjustable in said head, a lever pivoted in said head to said element and having a cam to engage the free end of the positioning finger, said lever and cam being operative to move the positioning finger to force together the Work-engaging faces, and a spring normally tending to mo've the finger against the action of the cam.

ture.

CARL INGALLS POLLARD.

In testimony Whereof, I affix my signa 

